Small Phone big car screen? .. This is how to get Uber and Lyft Navigation on your big screen ..using Sync 3 version 3.3 (may work on other versions)
Download Android Auto at the Play Store and install ..Turn on Android Auto First then...
Go to : settings-Navigation App - and select "Google Maps in Separate app"
: Go to Navigation Settings - select Google Maps Navigation App -turn off Auto Navigation and Auto Switch Back (sometimes worked some times not so I just turned them off)
as I was picking up (note my small screen showed I was still 1 minute away and Big screen showed I had arrived (I had arrived..not sure what the discrepancy is about)